PCV oil pix...

good job explaining.....:wallbash:

 

Band aid...hahaha, it works don't it.....band aid my ass. that's a very small area to deal with. IMO, no different that at the edges of the rear main seal/oil pan and front cover corners. If that's all it takes and it lasts, that rocks. I'll agree that a different design would be ideal, but this ain't a bad approach.

 

A layer of duct tape probably would of worked just fine and cost a lot less than that fancy sealer.

 

True Vacuum Port

I just want to clear up the "vacuum" port on the N/A application manifold.

The port at the top of the manifold behind the throttle body is not a real "engine" vacuum port. Our true "engine vacuum" port is the small port located on the drivers side of the manifold at the front. This location "sees" its "engine vacuum signal" from the center spline area of the manifold. If you attach a vacuum gauge as you gain RPM the vacuum signal at that location will drop and when you return to idle will rise again. Mine is 16in at idle.

The top "vacuum" port behind the throttle body picks up its signal from the air rushing by at the throttle body opening, and typically it is in the 20" range at idle and rises rapidly as you gain RPM. It does this because of the tremendous amount of air passing by it as you open the throttle. That is the reason this specific location is used to evacuate the crankcase system. So with that said, both "vacuum" location are different, one is true engine vaccum the other is called "ported vacuum".

Ron - as far as the pictures of the oil, that isnt that bad. I have seen worse. Considering that, this location at the head is the ONLY crankase evacuation point, since we do not evacuate at the valve covers like Fords. Over the months I have used silicone, The Right Stuff, back to nothing and now the good old fashion "gasketcinch" red spray gasket from NAPA. I also make sure to afix the gasket to the bottom mating surface with the plastic tabs like they come from the factory. This along with some spray on sealant is as good as the seal will get.

As crazy as this sounds the oil seems to migrate under the gasket from cylinder port to cylinder port. If you notice you will find the oil film only appears in the manifold cylinder port about an inch and that rest of manifold cylinder port is dry. The plenum bottom may have some oil "cooked" on it but other than that the plenum and the runners have no evidence of oil. This is obsevation based on receiving and buying manifolds from all over the country and seeing the same thing every time.

As far as a supercharged engine, the PVC system works differently and typically the evacuation is critical. My Supercharged MB E55 pulled vacuum signal/"ported vacuum" (not engine vaccum) directly right behind the throttle body and I have always understood on a blow application to vent the crankcase BEFORE the supercharger. You may want to research how MB or Ford do their systems.

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